Mathematics
Grade6
Easy
Question
Write the equivalent expressions for the following:
x + 20
- x
- 20 + x
- x + 10
- 10
Hint:
We are given an algebraic expression. An algebraic expression consists of variables and constants. A variable is a quantity that doesn’t have any fixed value. A constant is a quantity with a fixed value. For this question, we have to perform the operation using the properties and find the equivalent expression.
The correct answer is: 20 + x
The given expression is x + 20
The above expression has one variable: ‘x’.
Both the terms are unlike terms. Unlike terms are the terms with different variables or a variable and constant.
As the terms are unlike term no further operation is possible
But we can use the commutative property. Commutative property: The commutative property means that changing the order of terms undergoing the same operation doesn’t change the results.
So the equation becomes
x + 20 = 20 + x
Therefore, the equivalent expression is 20 + x.
We should be know the properties required to do algebraic expression.
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